Projectile.



-A. HAASE'.

PROJEGTILEL APPLIOATIONfILED DEC. 14, 1907 Pa tented Aug. 24, 1909.

UNITED STATES PATENT enrich.

ALBERT HAASE, F ,ESSEN-ON-TH'E-RUER, GERMANY, -ASSIG-NOIB, T0 FRIED. KRUPP AKTIEN 4 GESELLSOHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.

PRQJEOTILE.

Speci *ation of Letters Patent.

Application filed. he's-ember 14, 1907. Serial 'No. 406,526.

To all whom it may concern:

Be it known that I, ALBERT Haasn, a subject of the'Emperor of Germany, and a resident of Essen-on-the-Ruhr, Germany, have invented certain new and useful Improvements in Projectiles, of which the following is a specification.

The present invention relates to projectiles of the type which is composed of a steel core, a mantle closed at the bottom and leaving the point of the core exposed anda filling of soft .metal interposed between the core and the mantle. In accordance with the present invention such prodrawing shows the invention applied to a projectile for an army rifle the figure showing the projectile partly in axial longitudinal section andjpartlym elevation and on an enlarged scale. j

The core of the projectile is made from hard steel and consists of the point A and the shank A. The point A may be of any suitable formation. In the drawing it is shownas having the shape of a pointed are. The shank l'k jls cylindrical throughout the greater part of its length and is of smaller diameter than the greatest diameter of the point while being of greater diameter than half the caliber oi the projectile. Near the. point the shank is provided with an undercut portion The cylindrical part of the shaft is longer than the combined lengths of the undercut portion and the point. The shank A- of the core is surrounded by the mantle B which is provided ing in a direction away from the bottom 5 of the mantle.

Ifan army-rifle projectile of this construction hits an armor-shield, such as commonly used for field-guns, the filling G is violently upset, bursts the mantle B and detaches itself from-the core A together with the mantle. The core A then continues its travel alone. When the projectile penetrates the armor the kinetic energy of the entire pro jectile thus acts on the core which has a smaller diameter than the projectile. This property the improved projectile has in common withthe known armor piercing projectiles of this type but has further the advantage of having a hitherto nnobtailra'ble penetrating force for the following reasons:

In the first place the mantle B and the filling 0 lie against a projection on the core of the projectile and consequently transmit all Patented Aug. 24, 1909.

The undercut por-- tion a of the core and the gradual taper of the mantle prevent the core from movtheir kinetic energy to the core on impact. 1

Secondly the resistance offered to the bursting by the coherent anass of the fillin C and by the mantle B is ivery great and t e time during which the mantle and the filling act on the core entering the armor-shield is therefore as long as posslble. There is a further advantage in the peculiar shape 'of' the core which on the one hand has the result that the core, after its point has penetrated the armor-shield, does not come in further frictional engagement \viththe walls of the hole made by the projectile; on the other hand, the shape of the core results in favorable conditions as regards the resistance oi the air in the part of the path of flight lying behind the shield.

The projectile retains its original shape when penetrating the bodies of human beings or animals as in this instance the resistance met with is not sufficient for effecting the sudden retarding of the velocity of the projectile which is required for the upsetting of the filling and the bursting of the mantle.

Having thus described the invention, what l. A projectile consisting of a cylindrical mantle open at one end, said open end being )rovided with a taper; a inirtl inetol core having it aolirl tjlt'mtilt'ittl point whose has: rests upon the annular edge of said mantle nnrl whose convex sinrtaoe oatentle tlnoh. with the outer snrtaoo oi saitl mantle, and a shank embodying a cylindrical portiot'i Within the cylindrical portion of the lllttllilti anti on on (lercutt portion within the tapereil oortiioir of said mantle; and-:1v soft metal tilling no copying the entire annular spare between the month: and tho eoro aiul Earring to look the core to the mantle by means; oi F-Itiltl nntier out portion of shank.

52. A projectile conign'isii'rgr a. mantle with a tnperetl open erul; a conoiilal point allot ting against the annular edge oi enitl ta ierott open entl anti having a tlepeni'ling shank integral therewith, said shank having a straight cyliruftrioai portion greater in (ii-- amotor than one half the caliber o the projectilc and an unt'lercut'v portion between the point and cylindrical portion; arul a filling Within the annular space between the mantle and the shank.

Z A infojoctile comprising a mantle, a C(Jl'iOltjlttl mint conneetcat. with said mantle, a shank integral with eaicl conoiclal point, said Eilltillli heing provided with an untlerrnt portion oi? lest. (,limnetor than the rest ot the shank; anti a soft: metal tilting within the annular space between the elinnk ttlltl the I mantle and projecting into sairl under ut portion of the shank to lock the shank and point to the nnn'itle.

l. A projectile consisting" oi a core of hard metal having a point and a shank having; an undercut portion adjacent to the point, a mantle olosc l at the bottom and eurrouiuling; said shank :Ult'l having its outer aurlace ex tending flush with tho eur'l'are or said point, and a filling interposed, between tho shank and the mantle; said shank being c 'liiulrica throughout a portion of its longt'l: greater than the combined letiggthe ot' the point amt said unclori'eut pUl'tl Ull.

5. A 111rojectile consisting of a core of hertl niot'al having a point anti a shank, a mantle (JlOSQtl at the bottom and stn'rountliiu: said shank and having ite outer surface extending; flush With the surface oi saitl point, and a fillin interposed between the shank anal the 1115111150 said shank being cylintlritai l throughout the greater part of its length and having an undercut; portion attinctmt to said. point; the diameter of the cylindrical part of the Shank being smaller than the greatest (liaiul eter oi? the point: and inorethan halt the "losatl at the bottom and enri'olnuliug E-ttLltl shanlo atul a lilting ii'it'erpoeetl hotween the shank anti the mantle and (insisting of a aiugle coherent, piece of soft. metal, taait] mantlo having its outer :au't'ace extending llush with tho etn'l'art' oi. the point. and Stlltl shank being throughout, oil smaller caliber than the base of the point and having its greatest :aliher for the rr-ater part of its lt ll ilftl'l vas t'ally r-one'tant. i

a. or ttlilt] oouiprising' a ('ore of ten-a metal having a/shanl-z anti a point, a mantle rloozal at tho hotton: t lltl t'tttlt'titllltlllltt: aaitl shank; :tlltl a titling itlittl'l'nn-ttttl hetwoou taluehant: and the ulantic aiul (rouse-fling of a sineie coherent piece o't eo'lt metal, Haiti mate tie nhntting with ita opon cntl against: tho haee oi .dtlltl point aiul having its outer Hill lace extending flush with tho eurl'aee ot' the point; antjl tt'tltl .--'hanl;'l.1ein,g' throughout ol' :anallor caliber than the base of the point and, having its greateat caliber for the greater part oi its ltl th essentially constant.

9. fl projectile compriaing a core of hartl metal having) a shank and a point, said shank having an tt'lltlt'i'tilt portion near the point. a niantlo t'lU-(Etl at the bottom and surrounding- Stthl ethank; .Hitl a lilline of soft, metal ilitr-i'poatal liet'u'tijai the shank and the mantle fllitl projecting into said llllllt'ltllt portion of the shank to lot-it the mantle to the shank: aaitl ahank living throughout: ol sniallt'l' caliher than the lame ot the point out? having; its greatest raliher tor the greater part oi ite length ceiacntinlly constant.

The foregoing specification signed at; Dun oelriori, tlcriuany, this Q'l-iill (lay of ()rtoher, taoT.

in presence oli- Winn nun I o/torn I n, (Iron life [Iron M an N.

at the bottom and snrrmtnding sairl 

